The hole that is in focus here, inside the rear secondary port... I think this is where the brake booster gets its vacuum from. Can someone verify or disprove this for me? If this is the case, is there any harm in using the nozzle where the anti-afterburn valve hose plugs into? It connects to the same tunnel:



Long story short, I was a retard and blocked off the hole where the banjo bolt and pipe attaches to the manifold. I'd really like to avoid either drilling/retapping the hole, or worse, getting a new manifold.

 

Nobody. Nobody has a spare, unmolested manifold that they can take a look at for me really quick?

 

It's a simple question. Can I use the bottom port highlighted by the circle instead of the original brake boost line?

 

i have an unmolested manifold the only difference i can see in mine is there might be a slight vacuum pressure difference due to the hole diameter from the banjo bolt to the anti-after burn valve post hole. but to my knowledge it should be fine and no re tapping is required just new hose.
good luck and tell me how it goes

 

Thanks, that's exactly what I needed to know. I'll report back once I crank the engine again.